Ventilating apparatus.



C. LIMBURG & W. D. SEGELHORST.

' VBNTILATING APPARATUS. APPLICATION TILED FEB.5, 1914.

Patented Mar. 23, 1915.

2 SHEETS-SHEET 1.

FIGJ.

THE NORRIS PETEPS C0. PHO'm-LITHQ, WASHINJIL N. D C.

G. LIMBUBG & W. D. SBGELHORST.

VENTILATING APPARATUS.

APPLICATION FILED IEB.5, 1914.

Patented Mar. 23, 1915.

1,133,047. I I 2 SHEETS-SHEET 2.

wn'N asses THE NORRIS PETERS 60., PHOTC-LITHQ, WASHING TON. n. 1..

Tim STATES FATENT oTTron.

VENTILATING APPARATUS.

Specification of Letters Patent.

Patented Mar. 23, 1915.

Application filed February 5, 1914. Serial No. 816.706.

'pose of removing therefrom the waste matter of the coflee or othermaterial being roasted, and also to effect collection and carrying offof waste matter carried by the gases of combustion, or otherwise.

The invention consists generally in combining with a machine of the typeindicated, and operating to separate refuse matter from the materialbeing operated upon, and utilizing fuel in combustion, means operatingby air suction to carry off the light refuse material and products ofcombustion, and to discharge them into a suitable collecting element ormedium.

\Vhile the invention is applicable to various uses and adaptations, thepreferred embodiment herein illustrated and described is in connectionwith a coffee roaster of a well-known type.

Referring to the drawings illustrating such application of theinvention,Figure 1 is a sectional elevation showing the application ofthe invention to a coffee roaster. Fig. 2 is a view of the apparatus inside elevation, partly broken away. Fig. 3 is a sectional plan view ofthe apparatus illustrating the water supply fluid circulation. Fig. 4 isa vertical sectional View of the collecting chamber, indicated by theline IV. IV. of Fig. 3. Fig. 5 is a transverse sectional View, indicatedby the line V. V. of Fig. 4.

- The coffee roasting machine, which is of well-known construction, andto which the present invention is particularly applicable, comprisesgenerally an inner perforated rotatable barrel 2 mounted upon supportingtrunnions or bearings in any suitable manner within an outer surroundingshell or case 3, annually spaced beyond the barrel for circulation ofthe products of combustion of any suitable fuel. For such purpose, a gasburner L is located within thecasing 3 below the rotatable barrel 2, forroasting the contents thereof during rotation of the barrel by anysuitable means, as gearing 5, 6, and a pulley 7 driven by belt 8 frompulley 9 of a driving motor 10. The gaseous prod; nets of combustion,together with any foreign or waste matter carried thereby in suspension,are drawn off from the interior of the casing 8 by a conduit 11 openingat any suitable point, as by port 12, into the interior space, theconduit 11 communicating with a suction fan 13 also driven by pulley 14and belt 15 from pulley 7. From fan 13 a conduit 16 leads outwardly toany suitable point of discharge, ordinarily into a fine or smoke stack.p

In the usual operation of machines of this class, rotation of barrel 2with its contained coffee or other material being roasted, loosens andseparates the surrounding chaff, bran or other material, which is of alight, highly combustible nature. 'Such material ordinarily passesoutwardly through the perforations of the drum into the surround ingspace, and frequently causes objectionable or dangerous combustion, withacc0mpanying noxious odors and other objectionable results. Thematerial, when discharged into a flue, frequently accumulates there, andis likely to effect dangerous combustion, or passes out of the flue inits original state, or as partly or wholly burnt products of combustion,into the surrounding atmosphere, and is of an objectionable andsoiling'nature. Our invention has in view to completely eliminate theseobjections and to positively discharge all of the loose discharged Wastematerial, and any matter carried in suspension by the waste gases, intoa collecting chamber and a water bath or current of water passingtherethrough, as hereinafter described. For the purpose of so positivelycollecting the waste matter of whatever nature, we provide, at anyconvenient position adjacent to the coffee roaster, the collectingchamber 17, into which the conduit 16 directly discharges the gases,

products of combustion, and suspended ter discharged from the drum, weprovide a spray pipe 24, extending around the upper edge portions of pan20, having series of jet openings directed downwardly and inwardly so,as to, provide a copious supply of spray water in any desired volume,within the control of suitable regulating valves, as will be readilyunderstood. Water is supplied to spray pipes 24: by a pipe 25, fromwhich, or from any other source of supply, one or more water supplypipes 26 are introduced tov the chamber 17, by which a copious supply ofwater may be provided at all times within the bottom portion of chamber17. Outlet 23 is located sufficiently high above the, bottom of thechamber to. insure sufficient depth of water at all times to provide areceiving and absorbing bath.

A deflecting bar or ledge 27? may be arranged across one corner of thechamber, as indicated in Fig. 3, whereby to direct the contents towardthe outlet conduit 23.

As shown in Fig. 2, a receiving hopper, box, or coaling car 28, mountedupon casters for easy moving over the floor, is used to receive theroasted coffee from the machine through spout or chute 29. Hopper 28 isprovided with a telescoping outlet connection 30. adapted to be interfitwith the end of an extension conduit 31, communicating with fan 13through a valve or damper-controlled opening, so that when the roastedcoffee is discharged into the hopper, any remaining loose material mayalso be drawn off from it by the fan and discharged in the same manneras above described. The damper is provided with an operating handle 32by which it may be closed at other times and during the roastingoperation.

The operation of the invention will be readily. understood from theforegoing description.

The various waste products are all positively drawn ofi from theinterior of the machine and delivered into or upon the surface of thewater bath, any gaseous products of combustion passing upwardly throughchamber 17 and outwardly by conduit 33 to a suitable stack or flue. Bythis means the products of combustion are effectually separated fromtheir eliminated suspended matter, which, with the other waste matter,is carried off by the water bath. V i will beunderstood that theinvention may be variously changed or modified in construction, details,or otherwise by the skilled mechanic within the scope of the followingclaims.

What we claim is: I

l. The combination with an inclosing casing embodying a combustionchamber, and means for supplying fuel in combustion thereto; of aseparate collecting chamber having a water inlet supply, a water outletconduit bath therein, a gas outlet therefrom, and a suction fanconnected with the combustion chamber and the collecting chamber andhaving a branch damper-controlled suction conduit for connection with aseparate receptacle.

2. An outer casing for a roasting machine of the class describedproviding a combustion and circulation chamber, a suction fancommunicating with said chamber, a separate collecting chamber, aconduit connecting the suction fan with said chamber, a water-sprayedpan in the base of the casing, and a conduit leading therefrom to thecollecting chamber.

3. An outer casing for a roasting machine of the class describedproviding a combustion and circulation chamber, a suction fancommunicating with said chamber, a separate collecting chamber, meansfor supplying to and exhausting water therefrom and providing a waterbath therein, a conduit connecting the suction fan with said chai ber, awateuqprayed pan in the base of the casing, and a conduit leadingtherefrom to the collecting chamber.

4. An outer casing for a roasting machine of the class described havinga cylindrical upper portion and a rectangular base providing acombustion and circulation chamber, a fuel burner therein, a collectingpan below the fuel burner in said base, means for supplying water tosaid pan, a separate collecting chamber, a conduit leading from thecollecting pan to said chamber, and a suction conduit connected with theupper portion of the outer casing and with the collecting chamberembodyingasuction fan.

5. In combination, an outer casing for a roasting machine of the classdescribed providing a combustion and circulation chamber, a suction fancommunicating with the burner, means for supplying a surrounding waterspray thereto, a conduit connecting said pan with the collectingchamber, and a conduit connecting the suction fan with the collectingchamber, substantially as set forth.

6. In a ventilating apparatus for a cofiee rranged to maintain a waterroasting machine, the combination of an inclosing casing having acylindrical upper portion for reception of a separator and a rectangularbase, a collecting pan within the base of the casing, a surroundingwater spray pipe having supply openings for directing a spray thereinto,a fuel burner lo cated upwardly above said pan, a separate collectingchamber having an upper gas outlet, means for supplying water to saidchamber and for carrying water and waste H151- terial away therefrom, aconduit leading by gravity from said pan to said chamber and terminatingadjacent the outlet thereof, a suction conduit communicating with theupper end portion of the casing, a suction fan connected therewith, anda conduit from said fan leading to the collecting chamber.

7. In a ventilating apparatus for a coffee roasting machine, thecombination of an inclosing casing having a cylindrical upper portionfor reception of a separator and a rectangular base, a collecting panwithin the base of the casing, a surrounding water spray pipe havingsupply openings for directing a spray thereinto, a fuel burner locatedupwardly above said pan, a separate collecting chamber having an uppergas outlet, means for supplying water to said chamber and for carryingwater and waste material away therefrom, a conduit leading by gravityfrom said pan to said chamber and terminating adjacent the outletthereof, a suction conduit communicating with the upper end portion ofthe casing, a suction Copies of this patent may be obtained for fanconnected therewith, a conduit from I said fan leading to the collectingchamber,

9. In combination, an outer casing for a roasting machine providing acombustion and circulation chamber, a suction fan communicating withsaid chamber, a separate collecting chamber having an overflow conduitand a deflecting barrier adapted to direct flow of the contents thereto,a conduit connecting the suction fan with said chamber, a water sprayedpan in the base of the casing, and a conduit leading therefrom to thecollecting chamber.

In testimony whereof we hereunto affix our signatures in the presence oftwo witnesses.

CHRISTIAN LIMBURG. WVILLIAM D. SEGELI-IORST.

Witnesses: v C. M. CLARKE, FREDK STAUB.

five cents each, by addressing the "Commissioner of Patents.

Washington, D. O.

